Combined lock and latch



Patented 0011.31, 1882'.

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B. F. BRIDEWELL.

COMBINED LOOK AND LATCH.

UNITED STATES PATENT OFFICE.

RICHARD F. BRIDEY'VELL, OF SAN FRANCISCO, CALIFORNIA.

COMBINED LOCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 266,758, dated October31, 1882.

Application filed March 29, 1882.

To all whom it may concern:

Bei't known that I, RICHD. F. BRIDEWELL, of San Francisco, in the countyof San Francisco and State of California, haveinvented certain new anduseful Improvements in Locks; and I do hereby declare the following tobe a full, clear, and exact description of the inveir tion, such aswillenable others skilled in the art to which it pertains to make anduse it, reference beinghad to the accompanying drawings, which form partof this specification.

My invention relates to an improvement in looks; and it consists, first,in the combination of the locking-bolt with the two headed tumblers,which are pivoted to the bolt, and which are moved at their front endsin opposite direetions, so as to catch behind different stops; second,in the combination of a knob-boltprovided with teeth upon its loweredge, with a pivoted weight whichis provided with teeth upon its upperportion, and which weight serves to hold the locking-bolt in positionthrough a sliding rod which extends from the bolt up to the weight; and,third, in the combination of a locking-bolt having serrations formed inits upper and lower edges, with tumblers pivoted thereto at differentpoints, and suitable rollers, which are applied to opposite sides of thebolt, allot which will be fully described hereinafter.

Figure l is a side elevation of mylock, partly in section. Figs. 2,3,4,56 are detailed views of the same.

A represents the lock-frame, which may be either cast or stamped fromsheet metal, and which has two extensions, B, formed on its rear edge.These extensions are made tubular, and upon the center of each one isformed the projection C, so that when the lock is pressed against theedge of the door these pro- 0 jections C will make a mark, so as to showwhere the holes are to be bored. After the two holes have been boredinto the door a suitable distance that portion between the two is cutaway, so as to form a regular mortise, in the usual manner; or theintervening wood may be removed by means of an auger in the usualmanner.

formed upon the rear edge of the look, as here shown, the screws for theescuteheons will not interfere with the lock in any manner as they arepassed into the door above and below the By having these extensions B-(No model.)

extensions, as shown. The knob-barrel D has a suitable number ofprojections, E, made upon it, and these projections passed throughsuitany suitable flexible material, and which is connected at both ofits ends with the rod G, to which the knob-bolt H is fastened. As thisstrap F is of the same width as the internal diameter of the frame, itmatters not in which direction the knob is turned, for itwill draw thebolt H back equally as well when turned in either direction. I

The bolt H may be made in a separate and distinct piece by itself, andthen screwed into the bolt-head I, which may be made of the same or adifferent material. Formed in the lower edge of this bolt H are a numberof teeth or cogs, with which the teeth or cogs of the upper portion ofthe weight J engage. This weight J is pivoted at V, and has its teethformed so as to form the segment of a circle, and thus it is made tomove upon the pivotV whenever the bolt His moved by the knob. Thisweight takes the part of a spring and 'serves the double purpose ofreturning the bolthead I to position after it has been drawn inward bythe knob and to hold the locking-bolt in position. hen the knob isturned so as to draw the bolt H backward the weight J is raised upwardinto a horizontal position, and then as soon as the bolt is released theweight drops back into position and forces the bolt outward again. Inthe under side of the upper end of this weight J, and to one side of theend of the sliding rodKcatches. This rod has a pin passed through itsslot, so as to serve as a guide to keep it always in position. The lowerend of this rod K has a roller, L, pivoted in it, and this roller bearsupon the top of the corrugated locking-bolt N. This bolt N will bepret'erablystamped up from apiece of wire, and will have a screw-threadformed upon its outer end, so as to have the bolt head 0 screwed uponit, and it will have both of its edges corrugated, as shown, thecorrugations being placed at an angle to each other. This bolt N issupported in position upon the roller P, which isjournaled in thelock-frame. Pivoted to this bolt- N, at its rear end, is the lever Q,and pivoted to the bolt N upon the other side,

able openings in the strap F, which is made of 5 a I smegma ferentpoints, so that when the key is inserted the end of one lever will bethrown upward at the same time that the other is thrown down. Each oneof these levers has shoulders formed upon its outer end, so as tocatchbehind the stops S and T, which are formed inside of the lock-framewhen the bolt is shot outward. When the keyis inserted the rear ends ofthe two levers or tumblers Q R are moved in oppo' site directions, so asto throw the front end ofQ upward and release it from the stop orshoulder T and to throw down the front end of R and thus releaseitfromthe stop S. The front ends of these two parts being released, the boltcan be freely moved in and out by the key. Should a false key beinserted .which is too small, the two tumblers will not be moved farenough to release them, and should the key be too large the tumblerswill be moved at their front ends, so as to catch behind the oppositestops. In order to make the two tumblers operate more readily, thefront" end of the one Q is made heaviest at its front end, so as to hangdownward, while the one It is made heaviest at its rear end, so that itsfront end will be pressed upward. The two stops S T are made inclinedupon those sides where the ends of the tumblers come in contact withthem, and thus guide them in their movements. As the bolt N is held downupon the roller P by the weight J and the rod K, when the key isinserted and the rear end of the bolt raised upward the two tumblerswill have their front ends disengaged from the stops and the rod K willbe raised upward at the same time, and the weight J will also be moved aslight distance. The bolt will then be moved either forward or back butas soon as the bolt is released from the key it becomes locked betweenthe two rollers L and Pin such a manner that it is almost impossible topick the lock.

Having thus described my invention, I claim 1. The combination, in alock, ofa knob-bolt, 1-], provided with teeth and the toothed pivotedweight J, withthe connecting-rod G, the perforated strap F, and theknob-barrel D, provided with projections E, substantially as described.

2. The combination, in a lock, of the swinging weight J, the rod K,provided with a roller,

L,a corrugated locking-bolt, and the supporting-roller P, the boltsbeing provided with suitable tumblers, substantially as set forth. 7

3. The combination of the locking-bolt N, the levers R and Q, providedwith shoulders upon their front ends and pivoted at different pointsupon the bolt, with suitable stops, S and T, which are placed inside ofthe lock-frame, a suitable means for supporting the bolt in position,and a suitable means for holding the bolt down, substantially asspecified.

4. In a lock, the combination of thelockingbolt with the two headedlevers or tumblers, which are pivoted to the bolt, and which are movedat their front ends in opposite directions, so as to catch behinddifferent stops, substantially as shown.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD FRANCIS BRIDEWELL.

Witnesses:

JOHN WHITE, JOHN E. HAMILL.

